//@file:JvmName("AAA")
//@file:JvmMultifileClass
package com.example.myapplication



   lateinit var agent:String

   fun test(){
       if (::agent.isInitialized) {
           println(agent.length)
       }else {
           println("没初始化")
       }
       println(::agent.isLateinit)
       println(::agent.isConst)
   }


fun main() {
    val student = Student()
   // println(student.oldAge)
    val jt = JavaUseKotlin()
    jt.test()
}
